EP0435663A2 - Magnetisches Aufzeichnungs-/Wiedergabegerät für TCI-Signale - Google Patents

Magnetisches Aufzeichnungs-/Wiedergabegerät für TCI-Signale Download PDF

Info

Publication number
EP0435663A2
EP0435663A2 EP90314296A EP90314296A EP0435663A2 EP 0435663 A2 EP0435663 A2 EP 0435663A2 EP 90314296 A EP90314296 A EP 90314296A EP 90314296 A EP90314296 A EP 90314296A EP 0435663 A2 EP0435663 A2 EP 0435663A2
Authority
EP
European Patent Office
Prior art keywords
signal
tci
chrominance
recording
reproduced
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90314296A
Other languages
English (en)
French (fr)
Other versions
EP0435663A3 (en
EP0435663B1 (de
Inventor
Takayoshi Yamaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of EP0435663A2 publication Critical patent/EP0435663A2/de
Publication of EP0435663A3 publication Critical patent/EP0435663A3/en
Application granted granted Critical
Publication of EP0435663B1 publication Critical patent/EP0435663B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/81—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded sequentially only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/87—Regeneration of colour television signals
    • H04N9/873—Regeneration of colour television signals for restoring the colour component sequence of the reproduced chrominance signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/87—Regeneration of colour television signals
    • H04N9/89—Time-base error compensation
    • H04N9/896—Time-base error compensation using a digital memory with independent write-in and read-out clock generators

Definitions

  • the present invention relates generally to magnetic recording/reproduction devices, and more particularly to a magnetic recording/reproduction device such as a video tape recorder (referred to as a VTR hereinafter) that records and reproduces TCI (Time Compressed Integration) signals obtained by time base compressing each of the luminance signal and the chrominance signal and time-divisionally multiplexing both.
  • a magnetic recording/reproduction device such as a video tape recorder (referred to as a VTR hereinafter) that records and reproduces TCI (Time Compressed Integration) signals obtained by time base compressing each of the luminance signal and the chrominance signal and time-divisionally multiplexing both.
  • TCI Time Compressed Integration
  • VTR employing a TCI signal as the recording signal format.
  • This TCI signal is obtained by time base processing a luminance signal as well as a color line sequential signal obtained by applying line sequential processing to two chrominance signals (for example, color difference signals) C1 and C2, and time-divisionally multiplexing these signals in the same recording line (one horizontal scanning period).
  • chrominance signals for example, color difference signals
  • Such VTRs are disclosed in the technical reports of the Institute of Television Engineers of Japan, Vol. 13 No. 50, pp. 1-6, VIR 89-12, Vol. 13, No. 50, pp. 7-12, VIR 89-13, for example.
  • Fig. 1 is a block diagram showing a TBC (Time Base Corrector) circuit as an example of a reproduction processing system of a VTR for the above mentioned TCI signal.
  • TBC Time Base Corrector
  • FM signals reproduced by magnetic heads 22a and 22b from respective tracks on a magnetic tape 21 are amplified at the corresponding reproduction amplifiers 23a and 23b, and provided to a switching circuit 24 to be converted into a continuous reproduced TCI signal.
  • the reproduced TCI signal is provided to an FM demodulator 14 to be FM demodulated.
  • the reproduced TCI signal provided from FM demodulator 14 is applied to an A/D converter 17, a writing clock generator 15, and a synchronizing signal separating circuit 16.
  • Writing clock generator 15 generates a write clock signal Wck phase-synchronized with the reproduced TCI signal, and provides the same to A/D converter 17 and to a TBC line memory 18.
  • the synchronizing signal separating circuit 16 separates the horizontal synchronizing signal from the reproduced TCI signal and provides the same to TBC line memory 18.
  • A/D converter 17 is responsive to writing clock signal Wck from writing clock generator 15 to convert the reproduced TCI signal into a digital signal, and provides the same to TBC line memory 18 for time base correction. This digital TCI signal is written into TBC line memory 18 for each 1 horizontal line at the timing of writing clock signal Wck.
  • TBC line memory 18 digital data corresponding to the reproduced TCI signal is read out from TBC line memory 18 according to the timing of a read out clock signal Rck provided from a reference signal generator 20, whereby time base correction of the reproduced TCI signal is carried out.
  • TBC line memory 18 is implemented so as to allow asynchronous access for writing and reading.
  • the reproduced TCI signal read out from TBC line memory 18 is provided to a TCI decoder 19.
  • TCI decoder 19 carries out time base process to the reproduced TCI signal according to the timing signal provided from reference signal generator 20 to restore a luminance signal Y and chrominance signals C1 and C2.
  • Fig. 2 is a waveform chart of a reproduced TCI signal in variable speed reproduction.
  • Fig. 3 is a diagram schematically showing the color line sequence manner of a TCI signal, in which (a) shows the chrominance signal sequence of the TCI signal actually applied to TCI decoder 19, and (b) shows the proper chrominance signal processing sequence in TCI decoder 19. If the horizontal synchronizing signal is missing in the reproduced TCI signal, there is discrepancy between the chrominance signal sequence (a) actually applied to TCI decoder 19 and the chrominance signal sequence (b) that should have been applied to TCI decoder 19, as shown in Fig. 3.
  • hue error is generated on the monitor in case of some malfunction in line management of the TBC circuit even at the time of normal reproduction.
  • a method is disclosed in Japanese Patent Laying-Open No. 60-214693 to identify in advance the chrominance signal sequence of the TCI signal at the time of recording.
  • this method requires a separate creation of a color discrimination signal and insertion into the TCI signal, not allowing to increase sufficiently the time width of the color discrimination signal. Insufficient time width of the color discrimination signal will make it difficult to detect the color discrimination signal at the time of reproduction of the TCI signal, with the possibility of erroneous determination of chrominance signal sequence.
  • An object of the present invention is to allow the stable reproduction of a chrominance signal in a magnetic recording/reproduction device adopting a TCI signal as the recording signal format.
  • Another object of the present invention is to prevent the generation of the hue error particularly at the time of variable speed reproduction, in a magnetic recording/reproduction device adopting a TCI signal as the recording signal format.
  • the present invention is a magnetic recording/reproduction device for a TCI signal including alternately a first recording line having a luminance signal and a first chrominance signal time-divisionally multiplexed and a second recording line having a luminance signal and a second chrominance signal time-divisionally multiplexed.
  • the magnetic recording/reproduction device includes a synchronizing signal adding circuit, an FM recording circuit, an FM reproducing circuit, a synchronizing signal separating circuit, a chrominance signal determining circuit, a TCI signal decode circuit, and a sequence control circuit.
  • the synchronizing signal adding circuit adds first and second horizontal synchronizing signals each having a different time width to the first and second recording lines of the TCI signal.
  • the FM recording circuit FM records on a magnetic tape the TCI signal having first and second horizontal synchronizing signals added.
  • the FM reproducing circuit FM-reproduces the TCI signal from the magnetic tape.
  • the synchronizing signal separating circuit separates first and second horizontal synchronizing signals from the reproduced TCI signal.
  • the chrominance signal determining circuit is responsive to the time width of the separated horizontal synchronizing signal to make determination whether the chrominance signal multiplexed on the recording line of the reproduced TCI signal is a first chrominance signal or a second chrominance signal.
  • the decode circuit decodes the reproduced TCI signal and restores a luminance signal and first and second chrominance signals.
  • the sequence control circuit is responsive to the determination result of the chrominance signal determining circuit to control the decode sequence of the first and second chrominance signals by the decode circuit.
  • the main advantage of the present invention lies in that it is possible to correct the discrepancy between the chrominance signal sequence to be decoded and the proper sequence at the time of reproduction by setting the time width of the horizontal synchronizing signal of the TCI signal according to the type of the chrominance signal of the corresponding recording line at the time of recording, preventing the generation of hue error.
  • Another advantage of the present invention lies in that erroneous detection of color determination signal is prevented at the time of special reproduction due to the fact that determination of chrominance signals are carried out using the time width of the horizontal synchronizing signal of the TCI signal.
  • Fig. 4 is a block diagram showing a recording system of a VTR of an embodiment of the present invention.
  • Fig. 6 is a waveform chart showing a general method of creating a TCI signal. Referring to Figs. 4 and 6, a luminance signal and two chrominance signal components C1 and C2 forming a video signal are converted into digital signals by A/D converters 25, 26 and 27, respectively, according to the timing signal from a timing generator 43.
  • the digital chrominance signal component C1 (Fig.
  • TCI encoder 32 chrominance signal C1 and luminance signal Y are time-divisionally multiplexed at a horizontal period, and chrominance signal C2 and luminance signal Y are time-divisionally multiplexed at the next horizontal period (Fig. 6(d)).
  • the output of TCI encoders 32 is converted into an analog signal by D/A converter 33 and provided to FM demodulator 34.
  • TCI encoder 32 and D/A converter 33 are controlled by the timing signal from timing generator 43.
  • the output of D/A converter 33 is FM demodulated by FM demodulator 34 to be FM recorded on respective tracks of a magnetic tape 42 through magnetic heads 37 and 38 after current control by recording amplifiers 35 and 36.
  • information regarding the chrominance signal in the corresponding recording line i.e. the information concerning whether chrominance signal component multiplexed in the corresponding line is either C1 or C2 is indicated depending upon whether the time width of the negative horizontal synchronizing signal in the TCI signal is broad or narrow. Therefore, two types of negative waveform signals are used as the horizontal synchronizing signal in the TCI signal, as shown in Fig. 7A. (I) of Fig.
  • FIG. 7A shows a waveform of a horizontal synchronizing signal when the chrominance signal multiplexed in the corresponding line is C1
  • (II) shows a waveform of a horizontal synchronizing signal when the chrominance signal multiplexed in the corresponding line is C2.
  • (I) of Fig. 7A may show chrominance signal component C2
  • (II) may show chrominance signal component C1 conversely.
  • the combination of the waveforms of the horizontal synchronizing signal for identifying two chrominance signal components C1 and C2 is not limited to that shown in Fig. 7A, and the combinations shown in Figs. 7B and 7C may also be used.
  • the horizontal synchronizing signal having a different time width is inserted at the head of the chrominance signal component of the corresponding recording line, by synchronizing signal adding circuit 31.
  • a TCI signal encoded as shown in Fig. 8 is recorded on magnetic tape 42.
  • Fig. 5 is a block diagram showing a TBC circuit of the reproduction system of a VTR according to an embodiment of the present invention.
  • FM signals of two tracks reproduced from magnetic tape 42 by magnetic heads 44a and 44b are amplified by the corresponding reproduction amplifiers 45a and 45b, where the same are applied to switching circuit 46 to be converted into a continuous reproduced TCI signal.
  • the reproduced TCI signal is applied to a FM demodulator 1 to be FM demodulated.
  • the reproduced TCI signal provided from FM demodulator 1 is applied to an A/D converter 5, a writing clock generator 2 and a synchronizing signal separating circuit 3.
  • the writing clock generator 2 generates a writing clock signal Wck phase-synchronized with the reproduced TCI signal and provides the same to A/D converter 5 and a TBC line memory 6.
  • the synchronizing signal separating circuit 3 separates the horizontal synchronizing signal from the reproduced TCI signal, and provides the same to TBC line memory 6 and a chrominance signal determining circuit 4.
  • Chrominance signal determining circuit 4 detects the time width of the horizontal synchronizing signal separated by synchronizing signal separating circuit 3 to identify the chrominance signal component (C1 or C2) multiplexed in the corresponding reproduced line (horizontal scanning period).
  • This circuit 4 generates a digital data (color identification signal) indicating the result as a binary of ⁇ 1 ⁇ or ⁇ 0 ⁇ , whereby the same is provided to TBC line memory 6.
  • A/D converter 5 is responsive to writing clock signal Wck from writing clock generator 2 to convert the reproduced TCI signal into a digital signal, and provides the same to TBC line memory 6 for time base correction.
  • the aforementioned color identification signal is inserted in the horizontal blanking portion of the provided TCI signal.
  • This TCI signal is written into TBC line memory 6 for every 1 horizontal line at the timing of writing clock signal Wck.
  • Data in the region excluding the region associated with chrominance signals and luminance signal are not necessary for further signal processing regarding the reproduced TCI signal after the A/D conversion by A/D converter 5. Therefore, it is possible to insert color identification signals, as mentioned above, in regions other than the above mentioned region of the data.
  • TBC line memory 6 is implemented to carry out writing and reading asynchronously.
  • Fig. 9 is a block diagram showing the hue error preventing circuit 7 of Fig. 5.
  • the TCI signal provided from TBC line memory 6 is applied to sequence detecting circuit 12, where the chrominance signal component sequence of the reproduced TCI signal is determined according to the color identification signal inserted in the horizontal blanking portion.
  • the signal showing the proper chrominance signal processing sequence of TCI decoder 8 is provided from reference signal generating circuit 9 to hue error preventing circuit 7, whereby the actually detected chrominance signal sequence and the proper chrominance signal sequence are compared in sequence comparing circuit 13. If there is discrepancy between these sequences as shown in Fig.
  • a switch 10 connects to contact a side, whereby the reproduced TCI signal is delayed by delay circuit 11 for 1 horizontal scanning period to make both sequences coincide. Then the reproduced TCI signal is provided to TCI decoder 8. When there is no discrepancy between these sequences, switch 10 is connected to the contact b side, whereby the reproduced TCI signal provided from TBC line memory 6 is directly applied to TCI decoder 8.
  • TCI decoder 8 is responsive to the timing signal provided from reference signal generator 9 to carry out time base process to the reproduced TCI signal for restoring luminance signal Y and chrominance signals C1 and C2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
EP90314296A 1989-12-27 1990-12-24 Magnetisches Aufzeichnungs-/Wiedergabegerät für TCI-Signale Expired - Lifetime EP0435663B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP341026/89 1989-12-27
JP1341026A JPH03198596A (ja) 1989-12-27 1989-12-27 磁気記録再生装置

Publications (3)

Publication Number Publication Date
EP0435663A2 true EP0435663A2 (de) 1991-07-03
EP0435663A3 EP0435663A3 (en) 1992-07-15
EP0435663B1 EP0435663B1 (de) 1996-08-14

Family

ID=18342537

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90314296A Expired - Lifetime EP0435663B1 (de) 1989-12-27 1990-12-24 Magnetisches Aufzeichnungs-/Wiedergabegerät für TCI-Signale

Country Status (4)

Country Link
US (1) US5258851A (de)
EP (1) EP0435663B1 (de)
JP (1) JPH03198596A (de)
DE (1) DE69028085T2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5293248A (en) * 1991-05-06 1994-03-08 U.S. Philips Corporation System and apparatus for recording and reproducing and extended definition video signal in/from a track on a magnetic carrier
US5594553A (en) * 1992-09-04 1997-01-14 Asahi Kogaku Kogyo Kabushiki Kaisha Video signal recording and reproducing apparatus using signal modification to remove jitter
US8015745B2 (en) * 2007-08-21 2011-09-13 Brian Spencer Westover Trapped air strike indicator and fly

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3717725A (en) * 1966-07-19 1973-02-20 Sony Corp Television signal recording system with color information recorded on a low frequency carrier at reduced amplitude with respect to the luminance information
US4251830A (en) * 1978-04-07 1981-02-17 Sony Corporation System for removing vertical vibrations from reproduced video
US4630131A (en) * 1983-02-09 1986-12-16 Victor Company Of Japan, Limited Recording signal generation system for color video signal
US4677497A (en) * 1983-12-15 1987-06-30 Sony Corporation Apparatus for recording and reproducing a video signal with reduced color subcarrier interference
US4716454A (en) * 1985-10-17 1987-12-29 Ampex Corporation Chroma phase word encode/decode in a video processing system
JPH01173985A (ja) * 1987-12-28 1989-07-10 Konica Corp 映像信号の時間軸補正回路
US4887169A (en) * 1986-04-04 1989-12-12 Matsushita Electric Industrial Co., Ltd. Video signal recording and playback apparatus having varied-speed playback capability

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4758898A (en) * 1984-07-30 1988-07-19 Sanyo Electric Co., Ltd. Video signal recording and reproducing apparatus
EP0234483B1 (de) * 1986-02-18 1993-09-01 Matsushita Electric Industrial Co., Ltd. Videosignalaufzeichnungsmethode und Vorrichtung zur Teilbildaufnahme
US5079637A (en) * 1988-03-16 1992-01-07 Kabushiki Kaisha Toshiba Apparatus for reproducing color video signal recorded by TCI signal format
NL8801206A (nl) * 1988-05-09 1989-12-01 Philips Nv Drop-out kompensatieschakeling.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3717725A (en) * 1966-07-19 1973-02-20 Sony Corp Television signal recording system with color information recorded on a low frequency carrier at reduced amplitude with respect to the luminance information
US4251830A (en) * 1978-04-07 1981-02-17 Sony Corporation System for removing vertical vibrations from reproduced video
US4630131A (en) * 1983-02-09 1986-12-16 Victor Company Of Japan, Limited Recording signal generation system for color video signal
US4677497A (en) * 1983-12-15 1987-06-30 Sony Corporation Apparatus for recording and reproducing a video signal with reduced color subcarrier interference
US4716454A (en) * 1985-10-17 1987-12-29 Ampex Corporation Chroma phase word encode/decode in a video processing system
US4887169A (en) * 1986-04-04 1989-12-12 Matsushita Electric Industrial Co., Ltd. Video signal recording and playback apparatus having varied-speed playback capability
JPH01173985A (ja) * 1987-12-28 1989-07-10 Konica Corp 映像信号の時間軸補正回路

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 450 (E-830)11 October 1989 & JP-A-01 173 985 ( KONICA CORP ) 10 July 1989 *

Also Published As

Publication number Publication date
DE69028085D1 (de) 1996-09-19
US5258851A (en) 1993-11-02
EP0435663A3 (en) 1992-07-15
EP0435663B1 (de) 1996-08-14
DE69028085T2 (de) 1997-01-30
JPH03198596A (ja) 1991-08-29

Similar Documents

Publication Publication Date Title
EP0303450B2 (de) Digital-Signal-Übertragungseinrichtung
US4175267A (en) Method and apparatus of inserting an address signal in a video signal
EP1175103B1 (de) Aufnahme und Wiedergabe eines MPEG-Informationssignals auf/von einem Aufnahmeträger
US4437125A (en) Digital signal processing method and apparatus
US5907655A (en) Method and apparatus for recording and reproducing digital video signals as a function of copy protection of a tape
US6118922A (en) Recording and reproduction of a trick mode video signal
JPS6231872B2 (de)
US5101274A (en) Digital signal recording apparatus time-division multiplexing video and audio signals
GB2061668A (en) Slow down processor for video disc mastering
US5459621A (en) Method and apparatus for rotary-head type signal recording and reproducing of digital video/audio signals
EP1046289B1 (de) Aufnahmevorrichtung zur aufnahme eines digitalen informationssignals auf einem aufnahmeträger
US5258851A (en) Magnetic recording/reproduction device for TCI signals
KR100239624B1 (ko) 비데오신호.오디오신호기록장치
US4937668A (en) Method and apparatus for transmitting video information
US4764820A (en) Picture element arranging method in video data recording-reproducing system
EP0438293B1 (de) Vorrichtung zum Aufzeichnen/Wiedergeben eines Videosignals, die eine Signalausfallfunktion enthält
US5940575A (en) Video signal recording apparatus
EP0962936A2 (de) Videoproduktionssystem mit progressiver Abtastung und magnetisches Aufzeichnungs-/ Wiedergabegerät
US5079637A (en) Apparatus for reproducing color video signal recorded by TCI signal format
EP0325256B1 (de) Gerät zum Wiedergeben von digitalen Videosignalen
JP2792627B2 (ja) デイジタル信号記録再生装置
US6671455B1 (en) Magnetic recording apparatus and method therefor, and magnetic recording and reproduction apparatus and method therefor
JPH0232834B2 (de)
JPH05325435A (ja) 再生装置
JPH0785578B2 (ja) デイジタルビデオ信号記録再生方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19901231

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 19950123

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 69028085

Country of ref document: DE

Date of ref document: 19960919

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20001212

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20001218

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20001220

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011224

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020702

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20011224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020830

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST